Switch control for spotlamps



July 27 1926. 1,594,142

E. G..K. ANDERSON v SWITCH CONTROL FOR SPOTLAMPS I Filed May 31, 1921 3 Sheets-Sheet 1 w I Q 22%672207"! 117269 I 4 1,594,142 E. G. K. ANDERSON SWITCH CONTROL FOR SPOTLAMPS I July 27 1926.

: Filed May 31, 1921 3 Sheets-Sheet ZZZ 277 66$ Patented July 27 19 26. I

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ogfi anothem typo oh u-nimerswl -a';c'0nstruchi0'1m shown; immy prior Umitbdz; States; Lotte TED lllM her 1,309,678, granted July 15, 1919. In such construction the rewinding reel is enclosed in a casing 10.

11 designates the casing of the spot lamp which carries the usual lamp bulb (not shown). 12 designates the front lens, and 14 designates a stem which extends rearwardly from the casing 11 coaxial with the focal axis of the lamp. The said stem 14 is made hollow, as indicated in Figures 3 and 4, to receive the lamp control switch, designated as a whole in said figures by 15. The type of switch herein indicated is like that shown in my companion application for United States Letters Patent filed on the 25th day of June, 1921, Serial Number 480,- 347. It will be understood, however, that the switch controlconstituting the present invention is capable of use with other types of switches and with other types of universal lamp mountings, one other type of mounting being illustrated in Figures 7 and 8, hereinafter to be described.

The universal mounting shown in Figures 1 to 5, inclusive, embraces as an element thereof an elbow fitting or carrier member 16, one arm 17 of which is rotatively connected to a hollow stud or carrier rod 18 which can be formed integral with the stem 14. Said joint or connection can be like that illustrated in my companion application for United States Letters Patent filed on 9th day of June, 1921, Serial Number 476,227, and need not be further herein described, except to say that the rotational connection between the carrier arm or member 16 17 and the stud or carrier rod, afforded by an extension of said rod fitted in a socket in the carrier member 18 enables the lamp casing to be swung in a vertical plane about the axis of said joint thus produced, The other arm 20 of said elbow fitting or carriermember 16 terminates in a downwardly extend ing cone-like bearing 21 which fits within a tapered bearing in a member 22 that is,

formed on a ring 23 by which the reel casing 10 is carried. A nut 24 threaded on the member 22 forces the joint tapers into frictional contact to permit the elbow fitting to be turned with a moderate manual force, while normally holding the rotative joint at this point fixed in adjusted positions. The latter joint permits the lamp structure to be swung in a horizontal plane.

Referring now to the details of the switch control mechanism whereby the lamp circuit switch is openedin predetermined positions of adjustment of the universal mounting, said parts are made as follows:

It may be preliminarily stated that the switch mechanism 15 within the stem 14 is directly controlled by a switch actuator 25,

which is disposed parallel to the axis of the horizontal arm of the fitting 16 and is provided with afinger piece or arm 29 by which either through axial movement of the actuator or through rotational movement thereof. The rotational movement of said actuator member is manually controlled by said arm 29. The axial movement thereof is automatically controlled by the control mechanism now to be described.

30 designates a control element which is of general U shape. It comprises specifically two parallel arms 31, 31 having free rounded contact ends 32, 32. Its closed por tion 33 terminates in a rounded nose 34, whose radius is considerably shorter than the general radius of the closed portion. For the purpose of adapting the said U- shaped control element to lamp mountings of different types, the said U-shaped portion is offset from the parallel arms 31 thereof, as will hereinafter be more fully described.

The said control element 30 is supported on the elbow fitting 16, in the construction shown in Figures 1 to 5, inclusive. Its support consists of a saddle member, designated as a whole by 35, which is rounded to fit closely on the rounded horizontal arm of said fitting. It abuts at its forward edge against the tightening nut 35 of the joint between the said horizontal arm andthe lamp stem stud 18. Said saddle member is fixed to the fitting by screws 36, 36 which extend through slots 37 in the saddle plate and are threaded to the wall of the hori-= zontal arm of the elbow fitting. Said slots permit slight angular adjustment of .the saddle plate on said fitting for a purpose which will hereinafter more fully appear.

The saddle plate is provided at its opposite edges and at the sides of the horizontal arm 17 of said fitting with guide sleeves 38 in which fit and are adapted for slight axial movement the straight arms 31 of the U- shaped control element 30. The rounded end 32 of said arms project somewhat beyond the forward ends of said guide sleeves 38 and are adapted in certain positionsof adjustment of the lamp mounting for engagement with the correspondingly rounded ends 25 of the switch actuator 25. The axial dis placement of said arms 31 of the control element 30 in said guide sleeves is limited by a lug 40 in one of theguide sleeves 38 which projects into an inwardly facing recess 41 on the inner side of the adjacent arm of the control element 30. This detail can be proversally and i s light shaft to be projected in all directions within the range of its movement and, after the switch has been once closed by hand, itwill remain closed except for the short are of movement of the lamp, either in its horizontal or vertical sweep, at a time when occupying or passing through the straight ahead adjustment of the lamp. It isobvious that a driver carelessly or maliciously manipulating the spot lamp cannot project the light straight ahead into the eyes of an oncoming driver or pedestrians ahead of the vehicle, and that when the adjustment is favorable for such objectional projection of the light shaft, the control of the light will be automatically taken away from the driver.

In Figures 7 and 8 my improvements are shown asadaptedto a type of spot lamp which embraces a'simple universal mounting without the rewinding reel shown in Figures 1 and 2. One of the features of myinvention .is embraced in the offset construction of the control member whereby it can be used equally well in both types of lamps. In Figures 1, 2 3, and 4 it will be noted that the U-shaped portion of the control element is offset downwardly from the arms 31 and'their guidefand supporting sleeves. In Figures 7 and 8 the same element is disposed with its U-shaped portion offset upwardly for contact with a fixed abutment on the fixed part of the. mounting.

The universal mounting shown in Figures 7 and 8 is relatively simple, it being like that shown in my companion application for United $tates Letters Patent filed on 27th day of June, 1921, Serial Number 480,561. It embraces a rigid bracket member that is attached to a fixed support 51, as the post of a windshield frame, 'a horizontally swingable member 52 that is joined to the fixed part 50 by a rotative joint 53, the axes of which is "in a vertical plane, and a second rota-tive oint 54 betwen said member 52 and the fixed lug 55 of the stem 14 that extends rearwardly from the lamp casing 11.' In the construction shown in said Figures 7 and 8,'the saddle. member 56, in the sleeves 57 of which the arms 31 of the control member 30 are'slidable, can be made narrower than the saddle member 25 shown in the other figures, and is adjustably attached to the mounting member 52 by a screw 58, which extends through a transverse slot 59 of the saddle member and is threaded into the mounting member 52. The contact between the forward rounded ends 32 of the control member 30 and the switch actuator pin 25 is the same as shown in the figures before described. The contact of the rear end or nose 34: of said control member, however, is with a pin 60 that extends upwardly from the fixed member 50 of the mounting. In theconstruction shown in Figures 7 and 8 it will be noted that inasmuch as the contact pin 60 is above the center of the rotative joint between the members 52 and 55, and inasmuch as the guide sleeves 57 of the saddle 56 lie substantially in the plane of the axis of the stem 14 ofthe lamp casing, the

offset closed end of the control element 30 is raised above. the guide arms thereof, in, stead of being below said guide arms'ofthe previously described figures. It will be obvious, however, that the functions of the several elements and the operation thereof is identical with the construction shown in the previously describedfigures. l

I claim as my invention:

1. Switch control for universal spot lamps comprising, the combinationv with -mount ing members rotati've on axes at right angles to each other, one adapted to support the lamp structure and the other having means of attachment to a fixed support, and an actuatorfor a controlling switch-for the lamp, of a control member slidably mounted on one of said mounting members and adapted for contact with said actuator, and means operative through one sweep of the lamp movement to move said control element in positionto engage and axially shift said actuator, and operative in the other sweep of the lamp movement to, cause the control member. to wipe against said actuator to axially shift said actuator.

2. The combination with the two members of a universal mounting for an electric spot lamp, one having means of attachment to a fixed support and the other adapted to-support a lamp casing, and an actuator for a controlling switch of the lamp, of a switch. control element slidably mounted on one of said members towardand from said actuator and adapted to be moved endwise by contact with a fixed part of the mounting, towards and in contact with said actuator when one of said mounting members is swung on its axis, and said control element being located in position for side wiping contact with said actuator when' the other of said mounting members is swung on its axis.

' 3. Switch control for universal lectric spot lamps comprising, "the combination 'with a universal mounting embracing members which rotate on axes at rightangles to each other, with means ofattaching one member to a fixed support, a lamp casing attached to the other mountin member and alamo controlling switch having an actuator, of a switch control element mounted and slidable on one of said mounting members, a fixed part adapted to engage said control element to shift it into contactwith said actuator to control said switch, and means to adjust said fixed part relatively to said control element.

4. Switch control for universal electric spot lamps comprising, the combination with the members 1 of a universal mounting, with support, a lamp-casing attached to theJother *lj-ustable stud mounted in a: art'fixedirela v ti'vely tosaidmounting-mem er, and a part carried thereby adapted to. contact with-said- 2 control element-'inonepart of the swinging the: members; of a; umversal mounting,- "with: means otattaohing one member/to a- ,fixedmounting rne'mbe r,; and? a-' lamp controlling swatch-havmgam actuator, of a switch con t1' 01 element mounted. and .movable on one of said mounting members, a vertically admovement of the latter'to shift-said control element; intoz-conitact with; saidswitch 5 actuatori, i

6. Switch, controlltori universal v' lectric spot Elam-10s .comprisi'ng'the combination with the members of a universal mounting, with means of attaching one member to a fixed control member and the end ofthe switch support, a lamp casing attached to'the other mountlng member,- and a lamp controlling switch havlng an actuator, of a switch con]- trol element mounted andslidable on one of said mounting members, saidcontrol element being slidable toward and adapted forcontactwith said actuator, a member mounted in a part fixed relatively to said mounting members and in rear oiisaid controlelement, and a contact member ad ustable 1n said fixed part toward and from said control eler the control element.

7. Switch control for electric spot lamps comprising a lamp casing provided with a ment and adapted for wiping contact with rearwardly directed hollow stem formed with a lateral stud, a lamp controlling switch in said stem having an axially'movable actuator, and a universalmounting embracing two members, on one-of ,whichfsaid stud has rotational adjustment, the other member having means of attachment toya fixed support and having rotational adjustment on an axis at right angles to that of said stud, of Y a switch control element movably' mounted on the latter member and adapted for endwise contact and for side wiping contact at one end with said switch actuator, and said control element being adapted for wiping contact at its other end with a fixed part on themounting.

8. Switch control for-electric spot lamps comprising, in combination with universally} mounted members, one havingmeans of attachment its, aEfiXedosI pprtrand the other-i adaptedlto' support aQrldmp.oasingtyandzk 81:;

controlling switehvafor} theJlamp provided; with an actutator, of asaddle supponted*ona" one ot the mountinglrmembers and :previded with! iangtllfl a r .switchvoontrol, element supportedand axiallyzmovable in saidg=uide1foni endlwise tcontact with said actuator, a ..part-; fixed-relatively} to. the mountingadapted for;

wiping. contact with. said; controlzelementr upon operativetmovement tof the, member;

carrying: 'the :lsame,.. said contact; end. Qty the;

control member andctheend ohthesswitoh;

actnatnr; heing mounded; for wiping: contact,-

.opemfiive men 5' on the; other; m gimembem I c 9.: Switchvscontrol; fort-electric. spotilampsr comprisingin combinatiomwi-th; universally; mounted members, one having: means sot rate,

,tao'hment to. a; fixed: support Land the :other;

adapted: to' support at: lamp-L casing, and? a' one @otithe mounting'l members-a id; providem with a; guide, ,alswitcha Contnoi element sun controlling switch for i the lamps provided: With, an a-actuaton', of; a saddle; supported: .01 1

ported iandzaxially movable; in said" guide in;

Qendwiseseontacb withz sa d actuator-inmate? fined lrelatrvelv ;te theiinennting;adantedztor: wining-1 conta t: with.ESQ idiQQQliEQLI element upon operative movement of the "member carrying the same, said, contact end of the actuator being rounded for wiping contact upon operative movement of the other mounting member, and means for angularly adjusting said saddle relatively to "the mounting member on. which it is supported. 10. Switch control for universal spot lamps comprising, the'combi'nation with the Vmembers of a universal mountingflfonthe lamp, and a switch actuatorfor thelamp switch, of a U-shaped controlelement slidably supported on one of said mounting, I f

ment at one position of one sweep of the, lamp, the closed part of said control element beingofi'set from its said arms.

11. Switch control for I universal spot lamps comprising, the combination with the: members of a universal mounting for they lamp, and a switch actuator forfthe" lamp switch, of a U-shaped control elementslidably' supported on oneof said mounting members with its arms lying on opposite sides thereof, one of said'arms being adapted forendwise and wiping contact with said actuator, and a part fixed relatively to said mounting member adapted for wiping engagement with the closed part of said element at one. position of one sweep of th 130 gagement with the closed part of said elelamp, .the' closed part of said control element'being offset from its said arms, and means for limiting endwise movement of said control element.

- 12, The combination with two members of controlling the lamp circuit and having an actuator, of a U-shaped control element, the arms of which are slidably supported on one of the mounting members and provided with contact ends, one of which is adapted foraxial and wiping contact with the switch actuator, and a part on said fixed support adapted, in one sweep of the lamp, to wipe against the closed end of said U-shaped ele ment to force the control member against and actuate the switch actuator.

- 13. The combination with two members of a universal mounting, one otthe members having means of attachment to a fixed support and the other member being adapted to support a lamp structure, and a switch for controlling the lamp circuit andhaving an actuator, of a U-shaped control element, the armsof which are slidably supported on one of the mounting members and provided with contact ends, one of which is adapted for axial and wiping contact with the switch actuator, and a part on said fixed support adapted, in one sweep of the lamp, to wipe against the closed end of said U-shaped element to force the control member against and actuate the switch actuator, the closed part of the control element being offset relatively to its said arms.

14. An automatic switch control for uni versal spot lamp-s comprising the combination with the members of a universal mounting for a lamp and an axially movable switch actuator for the lamp circuit switch, of a control element slidably supported and guided on one of the said mounting members towards and from said actuator and adapted to be axially moved by wiping engagement at one end thereof with a fixed part of the structure, said latter end being ofiset from the plane of the guided portion of said control element, the said switch actuator being cal ried by a part which swings relatively to the plane of axial movement of the said control element.

In witness whereof I claim the foregoing as my invention, I hereunto append my signature this 27 day of May, 1921.

ERNST G. K. ANDERSON. 

